I didn't know that OnLive did the recording shit, that is awesome... Still, streaming games is a shit idea in my opinion. Amuses me that now you say "If you're only interested in physical copies this isn't for you, but it's perfect for me" - Hah!

Wow, those regional restrictions are a complete joke! Only thing I can think could stop you playing Harvest Moon across regions is that (forgive me if I'm wrong about this) the time in-game ties into the time on your 3DS itself? If you connected to someone in a different timezone it'd get confused most likely.